OpenAI
gpt-5.3-codex
Made by OpenAI. Released 2026-02-05. Accessibility not recorded. Cheapest standard rate we hold: $14 per million output tokens, no context split.
What it costs
| Tier | Kind | In | Out | Cached in | From |
|---|---|---|---|---|---|
| standard | text | $1.75 | $14 | — | licensed-index |
per million tokens, US dollars. * marks a rate from a single registry or two that disagree — the best available number rather than a confirmed one. Every other row is confirmed against a seller or a licensed index.
What it scores, by house
| Benchmark | House | Score | Evaluated | Scaffold |
|---|---|---|---|---|
| swe bench verified | Epoch AI | 0.7±0.02 | 2026-02-25 | high |
| ale bench | collected by Epoch AI | 1655 | — | xhigh |
| apex agents | collected by Epoch AI | 0.5 | — | — |
| metr time horizons | collected by Epoch AI | 350 | — | — |
| terminalbench | collected by Epoch AI | 0.8 | — | Codelia |
| terminalbench | collected by Epoch AI | 0.6 | — | Terminus 2 |
| terminalbench | collected by Epoch AI | 0.7 | — | Mux |
| terminalbench | collected by Epoch AI | 0.7 | — | spoox-o-m |
| terminalbench | collected by Epoch AI | 0.7 | — | CodeBrain-1 |
| terminalbench | collected by Epoch AI | 0.7 | — | IndusAGI Coding Agent |
| terminalbench | collected by Epoch AI | 0.8 | — | Simple Codex |
| terminalbench | collected by Epoch AI | 0.8 | — | SageAgent |
| terminalbench | collected by Epoch AI | 0.8 | — | Droid |
| terminalbench | collected by Epoch AI | 0.8 | — | CodeBrain-1.5 |
| vending bench 2 | collected by Epoch AI | 5940 | — | — |
| webdev arena | collected by Epoch AI | 1369 | — | — |
| weirdml | collected by Epoch AI | 0.8 | — | — |
| weirdml | collected by Epoch AI | 0.8 | — | xhigh |
These scores are not comparable between houses and are not added up. A score is dated by when it was evaluated, not when the model was released, and a score without its scaffold is not a measurement — which is why both are printed.
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